Taxonomic Remarks
Thorson et al. (1983b) document the reproductive maturity for males at 32 to 34 cm DW, and at 35 to 45 cm DW for females, which can carry up to 11 fetuses per gestation. Delimitation of type-series of Potamotrygon circularis follows Hartel & Dingerkus (1997). Additional references: Thorson et al. (1983a), Compagno & Cook (1995), Ferreira et al. (1998).
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مؤشر التنوع الشُعبي الوراثي (مرجع 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
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مستوى غذائي (مرجع 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
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المرونه (مرجع 120179) |
منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (Assuming Fec<10). |
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ضعف الصيد (Ref. 59153) |
Moderate to high vulnerability (49 of 100). 🛈 |
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فئة السعر (Ref. 80766) |
Medium. |